title: [Initial evaluation of the Technicon H*2 blood analyzer: speed and quality of results].
abstract: The major differences of the autoanalyser Technicon H*2 with regard to the H*1, booth manufactured by the same firm, are the former's higher working speed, over one hundred samples per hour, its hydraulic changes and a new type of samples. This system provides cell counts, leucocyte differential count (LDC) and distribution graphs for cell volume, haemoglobin, platelets and leucocytes. Its accuracy was studied with regard to H*1 and reference methods, along with the precision, linearity, carry-over, necessary LDC revisions and LDC sensitivity, specificity and efficiency. Very good accuracy (r greater than 0.9) was found when except comparing H*2 with the other machine and the reference methods, except for MCHCH and basophil count. The linearity of results was good (r greater than 0.998) and the percentage of carry-over was less than 5% in all cases. Twenty one per cent of hospital patients (HP) and 8% of outpatients (OP) needed revision of LDC. False negative LDC appeared in 0.4% of HP and in 0.3% of OP. LDC sensitivity, specificity in H*2 have solved the problems of H*1, improving the performances and working velocity of the system.
authors.affiliation: Servei d'Hematologia Biológica, Hospital Clinic i Provincial, Universitat de Barcelona.
authors.forename: J M
authors.initials: JM
authors.lastname: Jou
authors.forename: C
authors.initials: C
authors.lastname: Pastor
authors.forename: M
authors.initials: M
authors.lastname: Aymerich
authors.forename: N
authors.initials: N
authors.lastname: Villamor
authors.forename: J L
authors.initials: JL
authors.lastname: Vives Corrons
mesh_terms: D001772:Blood Cell Count / Q000295:instrumentation*; D004909:Erythrocyte Indices; D005069:Evaluation Studies as Topic; D005188:False Negative Reactions; D006452:Hemoglobinometry / Q000295:instrumentation*; D006801:Humans
vernacular_title: Primera evaluación del analizador hematológico Technicon H*2: rapidez y calidad de resultados.